My gunnite\plaster pool has been installed for 3 years. This year I added a solar setup to extend the season. Every time the pump fires, I get air out of the returns for a good 60sec, while the filter is pressurizing.
When the pump is off, there are no bubbles in the pump housing (strainer basket). The solar is off right now, so air I would expect from drain down shouldn't be the culprit.
I have a 3 way valve from the filter that goes back to the pool and out to the solar, and a check valve on the return. The Check valve and 3Way valve share a T to the return back to the pool.
I don't remember this happening before I added the plumbing for the solar, is this normal, or do I have a leak somewhere?
Thanks for all of the info on this site. Waaay better than my local pool store!